As you cann see, does the spreadsheet shows you, which buffs/debuffs your currently group composition has and which are missing.
All you have to do is input the classes of the 4 players and the skills/runes of every player and the spreadsheet will do the rest. It will show you how much crowd control, buffs, heals and debuffs you have. Here a Screenshot of the output:
If your party has 2 armor buffs for example, you may want think about changing one of the selected skills/runes.
The current version of the project is 0.3, so it is still a beta and there are propably a bug or two (even if we couldn't find it), so if you find something, that seems odd to you, post it here or using the Support link (which I would prefer).
And here some instructions to get you started:
1. Select one of the 4 player cells and change the class.
2. After you selected the class, you can select the skills for this player.
3. After you selected a skill, you can select the rune for that skill on the column next to it.
4. Enjoy using it .
Missing quite a few buffs from skills + rune combinations.
Edit: Monk's Mantra of Healing - Time of Need missing the +20% resist all buff
Edit2: Barbarian's War Cry doesn't show the +20% Armor to party members, nor the Hardened Wrath's increase to +40% Armor.
Edit3: Witch Doctor's Big Bad Voodoo - Slam Dance doesn't show the +30% damage buff to allies.
Edit4: Wizard's Blizzard - Frozen Solid doesn't register as a 20% chance 3 second Freeze.
Edit5: Wizard's Slow Time - Time Warp doesn't register as a +20% damage buff while monsters are inside the bubble.
This happens, when you have 2 version of the table on your computer...
I uploaded the wrong version, so only half the debuff/buffs were actually in it, which is now fixed. All the buffs you mentioned and a few more that were missing are now, where they should be.
Additionally - "Final" Pre-Release version uploaded and ready: