Fundy Designer is partnered with 140+ labs to choose from! When you design an album through an additional/non-direct lab partner, you'll select "Export for Print" or "Export for Splits" to export your album spreads as print quality jpeg files.
You can find the Export button in the top right corner of the software window. Once you export, you can upload your jpeg files to lab of your choice using their ordering system, typically ROES.
For more information about exporting and ordering through ROES, see the following tutorials: