The assembly pin 1 polarity markings include a Dot, Circle, Chamfer and Bar. 

Polarity indicators scale themselves to the part size within defined user or hard-coded minimum and maximum limits.

The dot and circle sizes are equal to 1/2 the lesser of body length or width, not to exceed the circle/dot minimum and maximum limits.

Here are the Options for setting the minimum & maximum assembly polarity Circle/Dot sizes.

The Circle/Dot sizes automatically scale per the minimum body dimension.

Here is a sample of an Assembly Polarity Circle:

Here is a sample of an Assembly Polarity Circle:

The Chamfer is equal to 1/3 the lesser of body dimension and not to exceed a maximum of 1.00 mm. 

Example: if the minimum body dimension is 1.60 mm, the chamfer size will be 1/3 less or 0.53 mm.

Here is a sample of an Assembly Polarity Chamfer:

The Polarity Bar is equal to 1/6 the package body width, not less than 0.25 mm or more than 1mm max. The Polarity Bar is limited to polarized 2-pin packages including Capacitors, Diodes, LEDs and Antennas.

Here is a sample of an Assembly Polarity Bar:

You select the type of assembly polarity marking and it will be applied to all your footprint patterns. 

This will add consistency to your PCB library assembly polarity markings.