How can I sign up to receive cash in the cash for patriots program ?

While it's not a scam but it is extremely misleading and I will be going over why. Can you make money with this? Sure. But are you going to be signing up for some list in receiving checks in the mail like he leads you to believe? Absolutely not.
Save your money there is no free lunch

How do I apply for the Trump's Cash Patriot Program

Cash for Patriots _wreaks_ of Ponzi/Pyramid Schemes... you pay for the kit, you pay fees...and, for those at the top/early members, AND, depending on how much you pay-in.....you may, or not, reap money back. How much you pay in, helps determine [if it's not too late] how much you get out of it. How high-up you are on the Pyramid, also determines how much you get back out of it.
Gov't DID make Ponzi and Pyramid schemes *******...yet, they keep reorganizing, keep renaming their games, and, have become HUGE in marketing...and investor scams.
They are unclear how much, and, make it sound variable.
The literature states "hurry so you don't miss out", and, in very poor English, says that the money won't always be there.....
One site tries to legitimize it by knitting in Trump's name, saying DT signed legislation making these funds available.
Those kinds of statements, combined with poor English, pretty much guarantee it's a SCAM...and absolutely a Pyramid scheme....same as MLM's/DMs, etc [they keep changing the names to take on an air of respectability]...
You can be sure, if there are "up-lines" and "down-lines", those who are "downlines" become the losers, while the money reaped from whatever memberships or sales, feed the fat-cats at the top!
....Microsoft never had money to give away from Facebook Posts; ....No large company does that.
....Trump cannot find funds to pay the regular bills for the country, cannot help those in need...he's not gonna send millions of dollars to people just for paying memberships, paying for applications, paying to get a "kit" to teach you how to get "free" money monthly...Ain't.Gonna.Happen.
....So you can pretty well bet, that this "Cash for Patriots" is a huge scam, angling for suckers.

You can't normally turn off the clerk system as it would facilitate terrible fraud. You are just supposed to sign on and start using it.
All cash registers should be able to calculate change. Press SUBTOTAL once you have entered the items. Now type the amount received from the customer (no decimal point). now press Cash (or other payment key) and the change should be displayed.