[NTG-context] About font combination in ConTeXt MKIV

Dear friends: Until now (TeXLive 2018), to write Spanish and ancient Greek in the same document, I used the "simplefonts" module, which is said in the wiki (ConTeXt Garden) that it is obsolete. What is the method to do this with TeXLive 2020? I try to combine one font for Spanish text (eg libertine) and another for ancient Greek (eg New Athena Unicode), but I don't know how to do it without the "simplefonts" module, and if I try to compile the document with the "simplefonts module", I have an error Thank you. Manuel González.