Hello,
you can use the way like that.
The repeater can be one for a role (then you can use Display to roles property). Otherwise, you can use only one repeater for all the items and add the Where condition like that:
{%UserId%} IN (SELECT UserID FROM CMS_UserRole WHERE RoleId = your_role_field)
{%UserId%} is a context macro (
Macro documentation) and your_role_field should store the ID of role.
Best regards,
Helena Grulichova