D&D which box (character sheet) do I enter proficiencies in or do I put them in both?

Sorry new to this online way of playing and i'm not sure how the proficiencies boxes work and how this will effect game play. Do I put my weapon proficiencies in both boxes?

Hello Rob W., No worries at all and welcome to Roll20! i have moved your post to 'Specific Use and Questions & Macros' forum. You would put your Weapon Proficiency in the 'Other Proficiencies & Languages' box. Tools, such as Disguise Kit Thieves Tools, would be put in the 'Tool Proficiencies & Custom Skills' Box.  Additionally, you can also reach out to your DM on how they would like things to be entered on the sheet. Let us know if you have any additional questions. Until then, happy rolling!