I think igazor is right. The general store register is for tents, showers in a can, martial arts equipment, etc. The food register sells produce and prepared meals. I've never used one in the homeworld though.

@sittingbear, the general register "works" in a homeworld, but many of the items won't show up because they are restricted by world. You have to make yourself a tuning mod for those to show up (which I've done but don't regularly use).

When I used the food register the only option I had was to buy food (prepared meals). I didn't see any produce or grocery items.

City Hall>Nraas>Register>Apply and wait a couple of sim minutes and you should get 2 other options

And you have to use the Buy interaction not Buy Food

When I ran the test game earlier, I added kitchen counters and the Food Register to an empty community lot (visitors allowed). A role sim was assigned to the register almost immediately. I had my Sim go to the lot and I checked which option when clicking on the actual register brings up grocery store items (it's 'Buy').

The General Store register does sell the showers in a can, tents, etc. There's a mod available (also on TFM's site I believe) that allows Sims to buy WA goods anywhere. It's been a while since I used it so I don't recall if it's the General Store or Relics register that mod is linked to...I'm mentally wandering off topic.

I didn't need to do anything else, like using NRaas options on the lot, register or City Hall.

Sometimes newly placed registers don't have all the options available unless you use Registers Apply action or reload the game.

I haven't used the food registers in a homeworld, but in the WA worlds you need to use the 'buy' interaction to show produce and meats. The 'buy food' interaction is strictly for prepared food. @littlelambsy, are you not getting the 'buy' interaction on the registers at all?

Thanks for the replies. I'm not home at the moment but will check out the suggestions when l get home.

Ok, I was finally able to get back to the game and put back the food register in the grocery store. I assigned one of my residents and had another sim come in to buy groceries. I'm happy to say, I got the "buy" option and he was able to buy groceries. Now I have to go sort out the rest of the town, they're all over the place LOL Thanks for all the help and suggestions

UGH! Why is my store "closed"? I have the Food Register (not the general store register) placed, with a sim assigned to tend it. She stays at the till and doesn't leave it while assigned. I sent my sim to buy groceries and when I click on the register the only options is DE / Register / Browse, but the browse is greyed out and when moused over it says the store is closed! It is not closed. Why is my stores always showing closed and how do I make it open during business hours? I'm getting reeeeally frustrated with these registers.