Do you mean names of open tickets appear on the receipt?
If so, now Loyverse POS does not give such a possibility.
However, you can use "Dining option." You can choose one option from the set. The names of dining option you can form in your Back Office. During a sale, you can select one of their names. This name will appear on receipts and bills.
More about Dining option you can find in the help article: Dining Options