how do you warp this loom?

mystery loomhow do you warp this loom?

I have woven on this loom before but I removed the 2 narrow, horizontal attached warping bars because of not being sure how to use them. Can anyone explain this to me? The loom came with them (Ebay) and had good instructions as to how to assemble the loom but none about how to warp it. I hope the photo is clear enough to see it. Thank you SO much!  I’d like to use this loom to its full advantage. With the tension bar above the narrow warping bar and the frame board below the lower bar I just can’t figure it out. Is it to make a continuous warp? This loom is very similar to the Ashford loom except for those 2 additional warping bars.

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