Please make sure that the TT User who wants to access the MTT Summary page should have a TT User ID linked with Salesforce user ID.
Click here to know more about linking the TT User ID with Salesforce User ID. Once the TT User is linked with his Salesforce user ID the Salesforce user can access the Summary page, Multi Check-in screen or other MTT related tabs in Salesforce and Check-In/Out for Jobs/Projects in the org.
Note: If the TT User is not linked with Salesforce User ID the TT User cannot access the tabs mentioned below in her Salesforce login
- Summary page
- Multi Check-In Screen
- Track Time which is set at the utility bar of the Salesforce to tracker time