Whomever the wire manufacturer for your wire is, is where you go to determine this.  See if they have a website and look up your "wire" and diamater and it will tell you how to set the machine.
I guess you don't have a WPS, which is a document that tells you how to set the machine.  The information on a WPS usually comes from the manufacturer, its just transferrred into another format on the WPS that is easier to read and understand for a welder in the shop.
Good Luck

Welcome to the Forum Josh!

Arcaloy 439 is an 18% Cr alloy stabilized with titanium (Ti).
The high level of chromium provides additional oxidation
and corrosion resistance. Cr range is 17.0 to 19.0%.

Use this link...... Than click on "Product Data Sheet"
http://products.esabna.com/EN/home/filler_metals_catalog/filler_metals_product_detail/q/display_id.id4367f2a95d5473.24737297/category_id.436/path.filler_metals_cored_wire_stainless_steel_gasshielded_metal_core_arcaloy_439ti_no_aws_class

The above link is for GMAW wire, However being that your wire is .062 it might be a reasonable assumption that you are using the GTAW process. But since you diddn't provide us that information it's impossible to be sure.

GTAW parameters for this alloy will not be much different than with 300 series stainless steel fillers.