To add iManage Work for Microsoft Teams tab to a channel :
Select the preferred channel and then select + adjacent to an existing tab in the channel. The Add a tab dialog box appears.
Search for iManage using the search box at the top-right of the dialog box. Select the iManage app. A dialog box appears, prompting you to sign in to iManage Work.
Select Sign in to iManage, a sign-in dialog appears.
Figure: Signing in to iManage
After you sign in, a dialog box appears, allowing you to choose either a tab (set as default in your iManage Work client) or an existing workspace to be set as the starting location in your iManage tab within the Team channel . If you choose to set an existing workspace, you can select a workspace from the list of Recent Workspaces shown in the dropdown without typing anything in the text box or search for a workspace by typing the workspace name in the text box and then select one from the search results.
Figure: Selecting a tab or existing workspace from iManage Work