Hey
This ones a bit tricky therefore i didnt use this desgn anymore in newer themes, but here it goes:
1. Youll have to mod the mcp_bg.png and mcp_bgsel.png like they are in the 2014 theme- set enough space with the pink lines to fit the recinput box
Ive attached two moded pngs for the background- mod further to the height of your liking- youll be looking at the pink lines height at the top left side of the image that determine how much space will be left on the top
2.
Youll have to set set inserts area to customized not self promoting in the rtconfig.txt file in the themes folder (please note that this setting is separate for each layer)
set mcp.extmixer.mode [1]
And also set its position where its giong to be placed (xses mark the numbers of pixels youre giong to set)
set mcp.extmixer.position [x x x x x]
3. Youll have to set:
set mcp.recinput to the desire pixel location
Hope this helps
PS- great help to start is also thes theme development area on the site :
https://www.reaper.fm/sdk/walter/
and WTs great help topics stickied at the top of this theme forum area.
regards J