How to write an approval rule to check if Absence Submitted date is >= (Absence Submitted date +7)

Summary:

Requirement is if Absence Submitted date is >= (Absence Submitted date +7) then Auto approve,else if Absence Submitted date is < (Absence Submitted date +7) then route it to LM.

Now, in BPM or otherwise, i am unable to add the condition to check for (Absence Submitted date +7)...

How do i achieve thsi requirement. All suggestions welcome.

Content (required):

Requirement is if Absence Submitted date is >= (Absence Submitted date +7) then Auto approve,else if Absence Submitted date is < (Absence Submitted date +7) then route it to LM.

Now, in BPM or otherwise, i am unable to add the condition to check for (Absence Submitted date +7)...