I'm trying to put items into a table which have been deemed over due. I have the date of when items were completed last in a list, and I know the frequency of how often the items need to be completed. 

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> Ex. I have a cleaning that happened on 4/7/17 and it needs to be cleaned 30 days after it was last cleaned, and I have a cleaning that occurred 1/13/17 and it needs to be cleaned 90 days after it was last cleaned.
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How can I get Access to show me overdue items in a separate list? If it helps, I will click a button before going to this table. The thing is, not every item needs to be cleaned at the same frequency. To my knowledge, Access doesn't have the date functions like Excel and you cannot type functions into a cell. Thanks!