Detail this asset from Unity Asset Store: Original Link
This is a paid asset, but we’ll share Pro Draw Call Optimizer Free for you. Enjoy!!!
Pro Draw Call Optimizer v4.3.5
Pro draw call is an editor extension that will easily reduce your draw calls by creating atlases for your models so they can share materials for static/dynamic batching.
Custom shaders?, no worries, the tool automatically recognizes any shader that uses textures.
Supports Unity 5, 2017, 2018, 2019+!
NOTES:
– Easy, 2 clicks and have your scene optimized
– No scripting required.
– Meshes automatically set up and adjusted.
– Full lightmapping support.
– Your source assets will not be touched.
– Full multiple material per game object support.
– Full support for tiled materials.
– Examples included for you to see and play.
– Quick and easy object search by tag or layer.
– Option to create prefabs for the generated objects.
Still not sure? Just download the light version that can be found here, give it a try and see if it suits your needs.
ProDrawCall will not work with UVs outside of [0,0-1,1]
For multiple material GameObjects all the materials have to have the same type of shader.
For more detailed info you can check these links:
-Video how the tool works
-Video on how to easily set up your assets
-Video on how to quickly solve problems
-Video on how to work with LOD groups