We will call the establishment requesting admin rights the 'Managing' establishment (Futurama in the screenshots below) and the establishment granting the rights is the 'Managed' one (ICSGoogleTSG in the screenshots below).

1. Log on as the RM Unify Super Admin of the Managing establishment.
2. Select the Management Console link and click Manage Other Establishments.
3. Under the Request Super Admin Rights heading, click the 'copy link' icon .
4. Give this link to a Super Admin user in the establishment to be managed.
5. The Managed administrator will click the link, which displays an acceptance page, detailing the access they will be granting (Fig. 1).
6. Once they have read the information, they can choose to tick the Grant Access box. Click Accept (Fig. 2) and OK to the popup (Fig. 3). Or, they can choose to Decline.
7. Once the access has been granted, the Managed establishment will appear under the Manage Other Establishments section at the Managing establishment (Fig. 4). Whilst the Managing establishment will appear under the Delegated Admin Rights section at the Managed establishment (Fig. 5).
8. The Managing Super Admin can then click the Manage button to access the Managed establishment.
9. At any time, the Managed Super Admin can choose to revoke admin rights for the Managing Super Admin by selecting the Revoke button in Fig. 5.

Fig. 1