Sorry, I misunderstood your question. Screenshots always help
Select the polygon/s you want the image on and drag the image material to those polygons or select the polygons and choose Set Selection. This will automatically create a selection tag that limits that texture only to those polygons.
You need to make two materials, one with the logo and tan color and one only with the tan color. Make sure the material with the logo is on the far right of these two materials in your Object manager on the model. It is also possible to do this in a single texture that has an alpha channel for the logo (i.e. background of logo is transparent) and using a RS Material Blender Node with another RS Material Node for the tan color.
If you need to scale, move or rotate the texture on those polygons/selection, choose Flat Projection mode in the material tag Attributes Panel under Tag tab, then use either Texture Mode in the Viewport and use scale, move or rotate tools or in the RS Texture Node under Remap section under General tab to get the the texture to the desired place.
In Redshift RS Texture Node, to stop tiling, untick Wrap U and Wrap V in the RS Texture Node under the UV section. To stop tiling in the viewport as well, untick Tile in the material tag Attributes Panel under Tag tab.
Just found this tutorial for you. He uses Spherical Projection, but in your case, Flat Projection is fine. In future, this will depend on your geometry: