Only very simple forms can be be switch to datasheet view.
In over 15 users using Access I have rarely switch a form to datasheet view.
I find that a properly normalized (well design) database will not display properly if datasheet view from a form design to show related data from multiple tables.
If you can flatten (de-normalize) the data into a single row of a query then you can base the form on that query. This design will allow you to switch the form to datasheet view.
Boyd Trimmell aka HiTechCoach (.com)
Microsoft Access MVP Alumni 2010-2015