Invoicing tenants

You will have to use a liability account named unearned revenue, create it in the chart of accounts

then a service item which posts to that account for the rent called prepaid rent

Receive the rent check using that service item on a sales receipt

then monthly do a sales receipt

line one should be your rent service item which posts to the rental income account

line two, the prepaid service item, a qty of negative one, and the monthly rental amount

@Batool1

Prepaid rent income is not deferred, it should be reported as income when received.  The IRS requires prepaid rent to be included in income when received regardless of the period it covers or the accounting method you use.

Per the IRS:

Advance rent is any amount you receive before the period that it covers. Include advance rent in your rental income in the year you receive it regardless of the period covered or the method of accounting you use. For example, you sign a 10-year lease to rent your property. In the first year, you receive $5,000 for the first year's rent and $5,000 as rent for the last year of the lease. You must include $10,000 in your income in the first year.