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Log into Outlook Web App.
Locate the folders you want to share.
To share your own folders, right-click the folder you want to share then click Permissions...
To share folders from a shared mailbox, select your profile account avatar in the top-right corner. Click Open another mailbox, enter the name of the shared mailbox, then click Open. Right-click a folder in the shared mailbox and select Permissions…
Click the + sign to open the "add user" window.
Begin typing the person's name with whom you wish to share the folder. If they appear in an initial list of users, select them. If they do not, click Search Contacts & Directory and locate and select them there.
Click add and then confirm this person is highlighted in list of names.
Click the drop-down menu to the right of Permission level to assign the appropriate permissions you wish for this individual to have on this folder, or create a custom set of options by clicking to select desired options among the "Read", "Write", "Delete access", and "Other" areas.
Note: Assigning of permissions should be done with caution and users should only be granted permission suitable for the level of access needed.Confirm that everything is as desired for the selected user and then click ok.
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