Enable Hidden Button in CRM 2013 Using Ribbon WorkBench

Open Ribbon editor and select entity on which you want to enable button. In this example i enable Export to Excel Button on form.

Click on Command Bar and select button then expand command. Now right click and select Edit Display Rule

Now <Remove "Mscrm.HideonCommandBar" Rule. and other rule IsCore to "True"

This will Display "Export to Excel" Button on Competitor form.

Filter Lookup values in CRM 2011 and CRM 2013 without Javascript

In this Example I filter cities of a country. Follow following steps:

•  Every country have many cities, so i create a 1:N relationship of cities with country entity i.e. in city entity i have lookup of country entity. 
• Now in Account entity i create two lookups one of Country entity and second city entity.

• In city entity I added some sample records of cities and also select their country so that city will be filtered related to that country.                                                                                     

• Now open lookup of city and edit filter record settings as shown in below image. 

• Filtered records are shown below that When I select country Pakistan only cities related to Pakistan are shown and when I select country Afghanistan only cities related to Afghanistan are shown.