fixing APO time parameters -Chaotic and jumbled

Time entity

Guess work

Apart from this fields  Where are are the other  places .do I fix?

Planning horizon (ECC)

1. In MD61 screen ,in the just above bottom of screen “from”  to “ to”
2. In MRP parameters ,SPRO
3. In plant Parameters

SNP horizon

In SNP2 tab of MAT1

PPDS horizon

In PPDS tab of MATI and also in t code where you fix the model/version 000

Planning period (bucket) for SNP --,I want to fix as  1 week.

No idea

Where to fix it?

Planning period(bucket) for PPDS 6 shifts ie 2 days .Where do I fix this 2.

Guess it is in Create model /version screen   I guess

Where to fix it ?

Time bucket profile

Is there anything like SNP time bucket profile and PPDS time bucket profile ,is it that I need to make a definition in TR32 individually for SNP and PPDS separately just like SNP PPM and PPDS PPM ,

Storage bucket profile

This suggests the longevity of planning results to stay in the system -after the stated time has elapsed  planning datas become defunct,it has no relevance with planning period of SNP or PPDS

How to update the resources in APO,

No idea

SNP horizon ends with beginning of PPDS horizon or the fag end of PPDS horizon

Guess PPDS horizon is a horizon within a horizon

Difference between SNP PPM and PPDS PPM

No idea

Difference between single activity and multi activity resources in RES01

single activity means Single operation in a resource pool.like drilling alone or maching alone

multi mixed means Multiple operation in a resource pool like both drilling and maching