Connect the agency BM and MCC and assign accounts to clients

Connect the agency Business Manager and MCC once and send each ad account to the right client.

For agenciesUpdated on October 7, 20265 min read
In this article · 5 sections

In an agency, you don't connect Meta and Google client by client. You connect the agency Business Manager (BM) and MCC account once, and Relator discovers every ad account inside them. Then each account goes to the right client. The same applies to GA4 properties and Search Console sites.

An account belongs to one client only. If it changes hands, you move it to another client without logging in again.

Before you start

  • Who connects and assigns: the agency team. Invited clients only see the sources and can't change them.
  • In Meta, be a BM admin or have business management access granted by the admin.
  • In Google, have access to the MCC with the login you will use.
  • Create the clients first, so the accounts have somewhere to go. See Create a client.
  • Each account that syncs takes one source of your plan.

Connect the BM or MCC

  1. 1
    Step 1

    Open the agency's sources

    On the agency Home, the Connect the agency BM and MCC step has the Connect agency accounts button. You can also get there from the search at the top (Ctrl+K or ⌘K) by typing Connections. The agency Data sources screen lists the accounts from every BM and MCC.

    Illustrative screen
    Farol Agency
    Photo of Marina, who uses Relator
    Data sourcesAll your marketing data in one place, up to date and secure.
    Connected sources
    SourceAssigned toCurrencyStatusLast sync
    Korra — Conversion · Farol BMKorraBrazilian realFresh20 min ago
    Bravo — Search · Farol MCCBravoBrazilian realFresh34 min ago
    Unnamed account · Farol BMUnassignedUS dollarNot syncing—
    1. 1Connect new source opens the list. In an agency, Meta Ads, Google Ads, GA4 and Search Console connect through the organization.
    2. 2Each row is an account, with the BM or MCC it comes from.
  2. 2
    Step 2

    Choose Meta Ads or Google Ads and log in

    Click the platform card. In Facebook, use Edit to check the BMs and accounts Relator can see. In Google, sign in with the login that accesses the MCC and accept every permission.

  3. 3
    Step 3

    Choose the BM or MCC

    On Choose the Meta account (or Choose the Google Ads account), select the agency BM or MCC and click Continue.

  4. 4
    Step 4

    Check the accounts that will sync

    The Choose ad accounts screen (in Google, Choose sub-accounts) lists every account. Check your clients' accounts and click Finalize.

    Illustrative screen
    Farol Agency
    Photo of Marina, who uses Relator
    Choose ad accountsSelect the Business Manager ad accounts that should be synced.
    Search accountsSearch by name or ID
    Korra — Conversion
    Atlas — Reach
    Farol — Internal test
    1. 1With many accounts, search finds them by name or number.
    2. 2Only checked accounts sync and take a source of your plan. The others stay discovered, ready to use later.
    3. 3Finalize connects the BM and takes you back to the sources screen.

Assign accounts to clients

An account only shows up in a client's reports after it is assigned to that client. There are two ways.

  1. 1
    Step 1

    From the agency's sources screen

    In the Assigned to column, click the account selector, find the client with Search clients and choose it. For several accounts at once, check the rows and use Assign to client in the bar that appears.

    Illustrative screen
    Farol Agency
    Photo of Marina, who uses Relator
    Data sources
    2 sources selectedAssign to client
    Connected sources
    • Google Ads
      Vértice — SearchFarol MCC
      UnassignedAssigned to
    • Google Ads
      Vértice — ShoppingFarol MCC
      Unassigned
    • Meta Ads
      Nimbo — PerformanceFarol BM
      NimboRemove from client
    1. 1The Assigned to selector picks the account's client. Choosing another client moves the account.
    2. 2With rows checked, Assign to client sends them all to the same client at once.
    3. 3Remove from client releases the account: it stops syncing, but its history stays saved.
  2. 2
    Step 2

    From the client's profile

    In Clients, open the client and go to the Connections tab. Click the platform card. The Assign Meta account window (or Google Ads, GA4) shows the Connected manager and the Client account list. Choose the account and click Assign.

    Illustrative screen
    Farol Agency
    Photo of Marina, who uses Relator
    Korra
    GeneralBrandConnectionsMembers
    Meta AdsMeta AdsConnected
    Google AdsGoogle Ads
    Google Analytics 4Google Analytics 4
    Assign Meta accountChoose which Meta account belongs to Korra and click Assign.
    Connected managerFarol BM
    Client accountKorra — Conversion
    1. 1Accounts that already belong to another client show its name, for example "in Bravo". Choosing one moves the account.
    2. 2Assign links the account to this client and it starts syncing.
    3. 3Connect another BM (or MCC) logs in to a new manager and brings you back to this window.

Move or remove an account

  • Move: choose another client under Assigned to. The account then feeds only the new client.
  • Remove: use Remove from client and confirm in Remove the account from this client?. The account stops feeding reports and stops syncing. The history already collected stays saved.
  • A discovered account with no client and outside sync shows the Not syncing status. Assign it to a client to start syncing.

Common problems

  • "We couldn't find any Business Manager." Your Facebook login returned no BMs. Confirm at business.facebook.com that you are admin of at least one BM and reconnect, checking the BM under Edit. If you're only an analyst on the BM, ask the admin for business management access.
  • "No accounts discovered" in the assignment selector. There's no BM or MCC connected for that platform yet.
  • The account is connected but doesn't show in the client's numbers. It wasn't assigned to that client, or it was assigned to another one. Check the Assigned to column.
  • "We couldn't save the assignment." The account may have been disconnected. Reload the screen and try again.

Frequently asked questions

Can I connect more than one BM or MCC?

Yes. Repeat the connection for each one, or use Connect another BM (or MCC) in the client's assignment window.

Can one account feed two clients?

No. Each account belongs to one client. Choosing another client moves the account.

Do accounts I didn't check take a source of my plan?

No. Only syncing accounts take a source. The rest stay discovered, with the Not syncing status.

What about HubSpot and RD Station? Do they go through the agency too?

No. They are single-account and live in each client's space. See Connect HubSpot.

Does the client see the agency's BM?

No. The client only sees the accounts assigned to them, marked Via agency, and can't change them.

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