I'd like to update a "modified by" field based on a list field on a main dashboard.  For example, the database opens to the dashboard.  The user needs to select their name from a simple list field (unbound).  Then they will be allowed to open the input form which has the records to be updated. I have a main form for donors and a subform of what the donors have given.  I'd like each table to store the name from the list field on the dashboard in the field "Modified by" in each the donor table field and the subform field when they are updated.  I cannot find a video or instructions when searched on the internet to help me do this.  Thank you.