In "Create New Price" you can specify the price for every NFT, as shown below.
How to burn a token?
If you have uploaded an NFT, but it HAS NOT been minted, then you can simply delete the specific NFT by locating "Manage NFT", as shown below.
If the NFT has already been minted and is no longer wanted on the Blockchain, it has to be burned. For burning, click on "Create a burning endpoint" (RED button) within the "Manage NFT" tab (as shown above) and send the NFT to the endpoint address.
how can I fill up and pay out in internal wallet?
The "Fill up" and "Pay Out" functions are located in the profile tab in the top right of the screen, as shown below.
Following the instructions that appear.
Both options are available here.
How to add a wallet
Should you wish to add an external wallet you can do so when creating or editing the project from within your main Dashboard, as illustrated below.