Go to the BP_MasterHoldable and create a new variable called TurnLeft and set it to a Anim Montage and tick on Instance Editable. Then set the default value to AM_Turn_Left_90.

Create a new variable called TurnRight and set it to a Anim Montage and tick on Instance Editable. Then set the default to AM_Turn_Right_90.

Create a new variable called TurnRightCrouch and set it to a Anim Montage and tick on Instance Editable. Then set the default to AM_CrouchTurn_Right_90.

Create a new variable called TurnLeftCrouch and set it to a Anim Montage and tick on Instance Editable. Then set the default to AM_CrouchTurn_Left_90.

Next go to the BP_ThirdPerson_Anim.

Create a new variable called TurnLeft and set it to a Anim Montage and tick on Instance Editable. Then set the default value to AM_Turn_Left_90.

Create a new variable called TurnRight and set it to a Anim Montage and tick on Instance Editable. Then set the default to AM_Turn_Right_90.

Create a new variable called TurnRightCrouch and set it to a Anim Montage and tick on Instance Editable. Then set the default to AM_CrouchTurn_Right_90.

Create a new variable called TurnLeftCrouch and set it to a Anim Montage and tick on Instance Editable. Then set the default to AM_CrouchTurn_Left_90.

Add the highlighted nodes shown in the image below, location at the top of the image.

Next repeat the same process in the BP_FirstPersonBody_Anim