Configure the option "After input, move selection" (File | Options)

Here you can configure in which selection the active cell is moved when the user presses Enter.

CellJump

0. Do not move
   

   Registry Hive	HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
   Registry Path	SOFTWARE\Policies\SoftMaker\PlanMaker 2018
   Value Name	CellJump
   Value Type	REG_DWORD
   Value	0

1. Down
   

   Registry Hive	HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
   Registry Path	SOFTWARE\Policies\SoftMaker\PlanMaker 2018
   Value Name	CellJump
   Value Type	REG_DWORD
   Value	1

2. Up
   

   Registry Hive	HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
   Registry Path	SOFTWARE\Policies\SoftMaker\PlanMaker 2018
   Value Name	CellJump
   Value Type	REG_DWORD
   Value	2

3. Right
   

   Registry Hive	HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
   Registry Path	SOFTWARE\Policies\SoftMaker\PlanMaker 2018
   Value Name	CellJump
   Value Type	REG_DWORD
   Value	3

4. Left
   

   Registry Hive	HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
   Registry Path	SOFTWARE\Policies\SoftMaker\PlanMaker 2018
   Value Name	CellJump
   Value Type	REG_DWORD
   Value	4